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Not sure if I understood correctly. Can we as individuals contribute to any of these projects?

potacon Ask HN: Who wants to be hired? (November 2025)

Location: Spain/UK

Remote: Yes

Willing to relocate: Yes (Europe)

Technologies: 3D reconstruction, neural rendering, multi-view geometry, Diffusion models, AR/VR, Python, PyTorch, OpenGL, C++

Résumé/CV: https://manurare.github.io/

potacon Pontevedra, Spain declares its entire urban area a "reduced traffic zone"

I'm not saying the mayor should change what is not under his radar. I'm saying the mayor should attract private companies for locals that don't want to be public state workers.

potacon Pontevedra, Spain declares its entire urban area a "reduced traffic zone"

Do you know the funny thing? There is a cycle path from Pontevedra that stops ~500 meters before Marin (although still Pontevedra jurisdiction). It has been like this for years. Those 500 meters are ocean. We can't cycle through...

potacon Pontevedra, Spain declares its entire urban area a "reduced traffic zone"

It's true there is a bus to Marin every 20min but it uses a _single_ fixed route. People that live far away (>1km) from this path spend less time driving to Pontevedra than walking to the nearest bus stop.

It is not just increasing frequency, it is a matter of providing alternative routes to serve an important part of the population.

potacon Pontevedra, Spain declares its entire urban area a "reduced traffic zone"

Huh! I didn't know this. Thanks for clarifying. Yeah, we all know what the Xunta is doing...

potacon Pontevedra, Spain declares its entire urban area a "reduced traffic zone"

I'm from Pontevedra. It has been the major's long-term project (~ 20 years) to make the city for the pedestrians: and he's done it. This works mainly because of two things: 1) the city is small and it takes aprox 30 min to walk it entirely from end to end, and 2) it is mostly flat. Only a smooth hill from "orillamar" to "alameda/peregrina". Unfortunately, the major obsessed with getting rid of cars (which I am highly grateful) but forgot to provide reliable public transport to close-by villages (max 5km,i.e., Poio/Marin/Salcedo). This means tha people from these villages commute by car to the city, which has really poor parking capacity. And the most important thing: there are zero specialized jobs in Pontevedra. Either you are a public state worker, for which you need to pass an exam to lock a lifelong job with no possibility of being fired regardless of how incompetent you are, or you work in hospitality. My partner works in Santiago and I work in the UK. There is no future for us in our city unless we want to study and compete for a position with thousands of other Spaniards. I firmly believe the major should also prioritise quality jobs. It is pretty nice for tourists to experience a city with no cars, but the reality of most locals is that they either leave or settle to accept precarious jobs.

potacon RealmDreamer: Text-Driven 3D Scene Generation

I don't really get why they need the occlusion volume? What is its functionality? Doesn't rendering a pointcloud from a novel viewpoint already give the (dis-)occlusion mask?

potacon People hate the idea of car-free cities until they live in one

Just look at Pontevedra in Spain. 90% pedestrianised city and several years with 0 traffic related deaths. Lovely city!

potacon Advancements in machine learning for machine learning

Thanks. What was confusing me is the kernel size 4. Normally in (2D) convolutions you have (in_channels, out_channels, k, k) for a kxk kernel size. In the example above it the k is the first dimension instead of the last. This is in PyTorch, not sure about Keras

potacon Advancements in machine learning for machine learning

Can anyone explain how conv works in that graph. You have a tensor of shape [2,4,16] and you convolve with a kernel of shape [4,16,8] and that gives you a [2,8] tensor? How's that possible?